ADTRAN, Inc. to release first quarter earnings on April 17, 2018

HUNTSVILLE, ALABAMA - ADTRAN, Inc. (NASDAQ: ADTN) announced today that the Company will release its financial results for the first quarter 2018 after market close on Tuesday, April 17, 2018. The Company will conduct a conference call on Wednesday, April 18, 2018, to discuss the results for the quarter.

ADTRAN will webcast this conference. To listen, simply visit the Investor Relations site at www.adtran.com/investor approximately 10 minutes prior to the start of the call and click on the conference call link provided. An online replay of the conference call, as well as the text of the Company's earnings release, will be available on the Investor Relations site approximately 24 hours following the call and will remain available for at least 12 months.

ADTRAN, Inc. is a leading global provider of networking and communications equipment. ADTRAN’s products enable voice, data, video and Internet communications across a variety of network infrastructures. ADTRAN solutions are currently in use by service providers, private enterprises, government organizations, and millions of individual users worldwide.